some big savers. Reporter: Here's joanny. She spent years of perfecting the art of purchasing for less. As a mom of seven, she's had to. She's been featured on "extreme couponing." The ohio resident says she saves thousands a month using tried and true tips. I have gotten $2500 this year. Reporter:2500 back in cash? In cash. Reporter: Tip number one, when you buy online, use a shopping portal, like ebates. You can get a cash rebate. Second tip, give yourself a gift. Cards. Some stores give points toward free gas for ever dollar you spend. Load up on gift cards for stores you plan to shop any way. Last christmas, we purchased so many gift cards that we didn't have to purchase gas for up to three months. Reporter: Use coupons after you buy? New smartphone apps allow you the get coupon savings after you buy something. I have earned $48 in my paypal account. Reporter: Take a picture of the receipt. I'm going to get cash back. Shop sites that buy back returned merchandise. Joanie likes sar dipty. I think that is a win-win. Reporter: And joanie says, keep looking for new ideas. She follows money-saving blogs to find the best places to use coupo coupons. Most people with save 50% by following a blog. Reporter: Finally, she gives back. She's able to donate what she doesn't need to local charities and families in need all by stretching a dollar. Any savings big or small is just that, a savings. Reporter: For "good morning america," amy robach, abc news, new york.

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